Home / 783,011.70-1,174,517.55-668,850.30

Finding the Fourth Proportional to 783,011.70, 1,174,517.55 and 668,850.30

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Solution

The fourth proportional to 783,011.70, 1,174,517.55 and 668,850.30 is: 1,003,275.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,011.70 : 1,174,517.55 = 668,850.30 : x
  2. Step 2: Convert to fraction form
    783,011.70/1,174,517.55 = 668,850.30/x
  3. Step 3: Cross multiply
    783,011.70x = 1,174,517.55 × 668,850.30
  4. Step 4: Simplify right side
    783,011.70x = 785,576,415,672.77
  5. Step 5: Solve for x
    x = 785,576,415,672.77/783,011.70
  6. Step 6: Final answer
    x = 1,003,275.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.